Transport Telematics - Systemic View
Published by WSEAS Press
Copyright © 2013, by WSEAS Press
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See also: http://www.worldses.org/review/index.html
World Scientific and Engineering Academy and Society
Intelligent transport systems (ITS) link information technologies with transport engineering. The ITS
objective is to achieve principal transport, travel and forwarding processes services improvement within the
existing transport infrastructure. ITS services cover requirements from an individual local case up to the
complex wide area solutions with wide scale of services complexity. The telematics services are an integral
part of the ITS. They do not represent the only telecommunications solutions, but they are tightly connected
with a wide variety of transportation services. “Intelligent” services with the ability to support the relevant
environment of the complex system structures are provided. Consequently, this discipline is closely linked
with managerial and legal topics due to their ability to principally influence the system behavior.
There are numerous books and publication proceedings on the topic of ITS or transport telematics available
but their approach and scope is different from ours. Typically, they describe the impact of ITS systems on
traffic management e.g. real-time traffic management, planning of commercial vehicle operations,
environmental management, etc. or they present parts of ITS solutions in big detail: e.g. electronic fare
management, car navigation systems, fleet management, digital maps, strategies to reduce transport
congestions, etc. In this book we introduce a very new system-oriented approach to the ITS design,
operation and evaluation with respect to all predefined performance indicators like reliability, safety,
security, integrity, etc.
Systems Theory represents a significant theoretical background for any professional undertaking within the
branch of ITS. There are several approaches to elaborating this kind of theory, however, for engineering
purposes such as the ITS the classical approach called General Theory of Systems (GTS) is usually
accepted as the most beneficial. The Systems science within its application areas means resolving tasks.
Efficient handling of the systems ideas implies functional knowledge of a wide range of specific
The ITS applications require wireless seamless secure communications solutions with selectable level of
services quality and mostly also with a wide-area coverage. Even though publically available wireless
services usually provide reasonable coverage under acceptable cost conditions, most of the public providers
do not offer any data service with the guaranteed quality. The principal improvement of the service quality
can be reached by the selection of the best possible alternatives from the set of currently identified available
services. Efficient decision processes must be adopted to reach the relevant service quality guarantee.
Success of such approach relies on profound understanding of applied technologies and their performance
described by the performance indicators.
Critical system properties are represented by security aspects. The difference between security and safety
must be well understood. Safety assures that a life-critical system behaves as needed even when certain
elements fail. Security is a condition that results from the establishment and maintenance of protective
measures that ensure a state of inviolability from hostile acts or influences. Due to the fact that the human
being has been a part of a system, security must be understood as a complex of measures leading to the
survival of human beings in the system under the influence of an external hostile environment or any other
influences. Analysis of potential threats and other security vulnerabilities specific for the telematic system
represents the rest of this area. The behavior of a system consists of interactions among elements and it is to
be assumed that these interactions have to be undisturbed, i.e. to be secure.
The ITS solutions resolve interactions between systems of a dissimilar nature. The differences can be in its
nature, the types of these systems or in the role a particular human subject plays in such aninteraction. The
functional reliability has to be considered as an important factor specifying the practical applicability of any
real system. The ITS system requires to be designed with high functional reliability. The original approach
is based on understanding that reliable systems have to be constructed from adequately reliable parts. Such
approach can, however, lead to unrealistic and extremely expensive solutions. Besides the usage of solely
reliable components the method of lifetime minimization of system functional sensitivity to system
parameter changes has been applied. The newest approach developed and used only quite recently has been
based on the concept of the socalled prediction diagnostics.